SOME VARIATIONS OF URANIUM-ORE TREATMENT PROCEDURES
Modifications of processing methods now used in uranium-ore treatment may permit reduced reagont consumption, simplified flowsheets, or products of lower impurity cootent. Exploratory work has been done on a number of such possibillties. In sulfuric acid leaching at controlled pH, recycling of the leach liquor in some cases may permit a worthwhile saving in acid consumption. Some ores may be suitable for semistatic leaching at relatively coarse grinds, permitting a simplified flowsheet using countercurrent thickeners for the combined purposes of leaching, separating liquids and solids, and washing the leach residue. In the recovery of uranium from sulfuric acid leach liquors, solutions of sulfate salts have been found effective for stripping uranium from amine solvent extracts. Products made irom strip solutions of this type have shown improvements in impurity content over comparable ionexchange products from the same original leach liquor. Solutions of carbonate-bicarbonate have been employed successfully in the laboratory for elution of anion exchange resin loaded with uranium from sulfuric acid leach liquors, and the problem of gassing in the resin bed previously encountered in this work was overcome. (auth)
- Research Organization:
- Dept. of Mines and Technical Surveys, Ottawa
- NSA Number:
- NSA-13-007311
- OSTI ID:
- 4281838
- Report Number(s):
- A/CONF.15/P/227; AECL-637
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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